The fastest way to find, compare and buy Dayton 115V open drip proof motors.
Describe the HP, frame size, or equipment you're replacing a motor on. ChatMRO finds the exact Dayton match, shows alternatives, and gives you a quote — in seconds. No part number needed.
Updated
AI-generated imageAn open drip proof (ODP) motor is an AC induction motor with a vented enclosure design that allows air to circulate through the motor for cooling while shielding internal windings from vertically falling liquid or debris, distinguishing it from totally enclosed (TEFC) motors that seal the interior entirely. Dayton's 115V ODP motors are built as general-purpose replacement motors sold to fit specific Grainger item numbers and equipment models, most commonly heaters, fans, blowers, and pumps.
HVAC technicians, facilities maintenance teams, and equipment repair shops rely on Dayton 115V ODP motors wherever a failed motor needs replacing on indoor equipment that doesn't face direct washdown or heavy moisture exposure — the ODP enclosure's better cooling airflow compared to TEFC designs makes it a common choice for continuous-duty fans, blowers, and unit heaters operating in dry to moderately humid indoor environments. Dayton's practice of cross-referencing replacement motors to original Grainger item numbers and OEM model numbers (such as QVF100/QVEF100/QVSF100 series heaters) simplifies sourcing an exact-fit replacement without needing the original nameplate data. On belt-driven fans and blowers the motor is specified separately from the wheel it turns — see split-phase belt drive motor sizing for that side of the job.
Common configuration: 1/4 HP to 1-1/2 HP, single-phase 115V (some dual-voltage 115/208-230V), split-phase or capacitor-start motor design, 48/56/56Z/145T NEMA frame sizes, 1,725 nameplate RPM, cradle base or resilient ring mounting, Class B insulation, and continuous duty rating with a service factor typically between 1.15 and 1.35.
Stop second-guessing. Match your use case below — then let ChatMRO's AI surface the exact Dayton SKU, electrical data, and alternatives in one natural-language search.
Light-duty equipment replacement where lower starting torque is sufficient. 1/4–1/3 HP split-phase motors dominate here.
Replacing motors on Dayton/Sterling heaters and general HVAC equipment where a direct cross-reference exists. 1/2–3/4 HP models dominate here.
Larger equipment or facilities wanting flexibility across available electrical service.
Dayton (Grainger's private-label industrial brand) offers a broad lineup of 115V open drip proof motors, cross-referenced to specific OEM equipment models and Grainger item numbers. Here's how to navigate their catalogue without a 40-tab browser session.
ChatMRO indexes the full Dayton ODP motor catalogue. Search any product by description, application, or rough spec.
The general fan/blower workhorse. 115V single voltage, 48 or 56 frame, 1,725 nameplate RPM, cradle base mounting. Class F or B insulation, 1.25–1.35 service factor, CW/CCW shaft rotation.
Search 5K/6K Series →Direct-fit replacement cross-referenced to Grainger item numbers (3E228, 3E241, 3E369, 3E382, 4E457, 4E466, 4DG26, 4DG27) and OEM model numbers QVF100, QVEF100, QVSF100. Fits both Dayton and Sterling brand equipment.
Search QVF-Compatible Series →115/208-230V dual voltage, 56 or 145T frame, 1,725 nameplate RPM, capacitor-start design for higher starting torque. Continuous duty, CSA/UL listed, 1.15 service factor.
Search 6K321/6K826 Series →Use this table as a decision shortcut. Ask ChatMRO for the exact part once you know which row fits your spec.
| Model Class | HP | Frame | Best For | Full Load Amps | Motor Design | ChatMRO Verdict |
|---|---|---|---|---|---|---|
| Dayton 3K771 | 1/4 | 48 | Small fans, light equipment replacement | ~4-5A (typical) | Split-phase | Best entry point for fractional-HP fan/blower replacement |
| Dayton 6K778 | 1/3 | 48 | General fan and small equipment replacement | 5.8A | Split-phase | Good middle ground for moderate-duty replacement |
| Dayton 5K283 | 1/2 | 56 | General purpose fans, pumps, and blowers | 8.9A | Split-phase | Most common choice for standard 1/2 HP equipment replacement |
| Dayton 6XJ24 | 3/4 | 56Z | Equipment requiring 56Z nonstandard shaft frame | Model-specific | Split-phase | Use when replacing a motor with a nonstandard 56Z shaft configuration |
| Dayton 6K321 | 1 | 56 | Belt-drive equipment needing higher starting torque | Model-specific | Capacitor-start | Go-to when split-phase starting torque isn't sufficient |
| Dayton 6K826 | 1-1/2 | 145T | Larger equipment, dual-voltage flexibility | 19.2/10.0-9.6A | Capacitor-start | Best for higher-HP applications needing dual-voltage compatibility |
Not sure which row is yours? Describe your application to ChatMRO and get an instant AI-matched recommendation with datasheets.
Traditional catalogues force you to know the exact MPN before you find anything. ChatMRO flips that: describe what you need in plain English, and the AI finds the right motor from 30M+ indexed parts.
In plain language — by HP, frame size, or equipment being replaced. No MPN required.
Natural language processing maps your description to the closest-fit products across brands and specs.
Cross-brand equivalents, lower-cost substitutes, and in-stock alternatives shown side-by-side.
Add to cart or request RFQ directly from the results. No phone calls. No email chains.
Whether you're a technician replacing a failed motor on a specific piece of equipment, or a facilities manager standardizing spares across multiple units — use this framework before you procure.
Many Dayton ODP motors are sold as direct replacements cross-referenced to specific Grainger item numbers and OEM equipment model numbers — check your existing equipment's nameplate or model number first to find an exact-fit replacement.
NEMA frame designations (48, 56, 56Z, 145T) determine shaft diameter, length, and mounting bolt pattern — confirm your existing frame size before ordering a replacement to avoid mounting mismatches.
Split-phase motors suit loads with lower starting torque requirements (most fans and blowers); capacitor-start motors provide higher starting torque for harder-to-start loads like some pumps and compressors, where a start/run capacitor design is the usual specification.
Single-voltage 115V motors are simplest for standard circuits; dual-voltage 115/208-230V motors offer flexibility if the installation's available service could vary.
ODP motors are best suited to dry to moderately humid indoor environments without direct washdown exposure — confirm this matches your installation location rather than defaulting from a prior TEFC motor without checking.
Two motors with the same HP rating can have different frame sizes and shaft dimensions. Search by function on ChatMRO — the AI surfaces exact matches AND available substitutes that fit your existing mounting.
ODP enclosures are not designed for direct exposure to washdown spray or heavy moisture — a totally enclosed (TEFC) motor is more appropriate in those conditions.
Swapping a capacitor-start motor for a split-phase model can result in insufficient starting torque for the connected load. Confirm which design the original motor used before ordering a replacement.
Describing your application to ChatMRO takes 30 seconds. The AI reads the full Dayton ODP motor catalogue so you don't have to.
Just describe what you need. ChatMRO finds the right Dayton 115V open drip proof motor in seconds.
Dayton 115V open drip proof motors are among the most widely specified general-purpose replacement motors for fans, blowers, heaters, and light industrial equipment. The Dayton brand commands significant market presence due to its broad HP and frame size lineup, direct cross-referencing to Grainger item numbers and OEM equipment models, and proven reliability across split-phase and capacitor-start motor designs. Procurement professionals and facilities engineers in India, Southeast Asia, and North America regularly source Dayton 115V ODP motors for equipment maintenance, motor replacement programs, and general HVAC/R repair.
ChatMRO simplifies this procurement process by providing AI-powered natural language search across a catalogue of 30 million+ indexed industrial parts. Engineers and buyers no longer need to memorize MPN codes or navigate multi-level filter trees to find the right motor. A simple description of the HP, frame size, or equipment being replaced is sufficient to surface the correct Dayton product alongside cross-brand alternatives and real-time pricing.
